AR57 trigger not resetting

Discuss rifles chambered for the 5.7x28mm; P90, PS90, and AR57.
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Bandit4hire77
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AR57 trigger not resetting

Post by Bandit4hire77 » 20 Sep 2021, 15:44

Hello,
I’m having issues with my recently purchased and assembled AR57 rifle. Upper and lower are AR57 brand. Lower parts kit is from Palmetto State. I could not contact AR57; after months of failed attempts it appears they have folded! I asked heavybuffers.com which buffer/spring I should use and a 6.5 oz buffer and Wolff XP spring were recommended. When I test fire the rifle the trigger will not reset after a few rounds. Any suggestions? Thanks!

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panzermk2
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Re: AR57 trigger not resetting

Post by panzermk2 » 21 Sep 2021, 11:01

It does sound like the bolt is short stroking.

Keep in mind you are dealing with 5.7 not .223/556 so those guys might be the best source.

What are the exact buffer and spring specs?
Are you using a Fulled sized buffer and spring and instead not a carbine/M4 buffer and spring?
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Pr. Elite Ammunition

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Bandit4hire77
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Joined: 20 Sep 2021, 15:34

Re: AR57 trigger not resetting

Post by Bandit4hire77 » 21 Sep 2021, 12:40

Here is the link for the 6.5oz buffer. It is a carbine buffer and spring.
https://heavybuffers.com/hss.html

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